The Charles Stark Draper Laboratory, Inc.

Seamus Tuohy

John M Irvine

Mark E Abramson

Samuel Beilin

Sungyung Lim

Kevin R Duda

Laurent Duchesne

Douglas J Zimpfer

John J West

Daniel Dionne

Louis Breger

In an embodiment, a method includes assigning, based on a switch module of a particular node of one or more nodes of a fault-tolerant group, a channel to the particular node. The method further includes determining a number of nodes in the fault-tolerant group by exchanging handshake information between the channel assigned to the particular node and channels assigned to other nodes of the fault-tolerant group. The method further includes initializing the fault-tolerant group with the determined number of nodes based on the exchanged handshake information.

Self-configuring fault-tolerant operational group

Methods and systems are disclosed for obtaining and analyzing information to determine an estimated state of a real world. First information is obtained from a first source of a plurality of sources (e.g., data stores, real-time data streams, or information services), where the first information is potentially indicative of first and second states of the real world. If the first information exceeds a first decision threshold, then the estimated state is the first state, and if the first information exceeds a second decision threshold, then the estimated state is the second state. If the first information does not exceed either of the first and second decision thresholds, then second information is obtained from a second source. Obtaining the second information is based on whether the second source includes information that is relevant to the estimated state and whether the second source includes information that is redundant with the first information.

Method and system for obtaining and analyzing information from a plurality of sources

A new approach for rapid slew and settle of small satellites is based on four single degree-of-freedom control moment gyroscopes with variable speed flywheels (or reaction wheels) in a pyramid configuration, combined with path and endpoint constraint time-optimal control. The path and endpoint constrained time-optimal control can be augmented with momentum management without the use of additional actuators.

Rapid slew and settle systems for small satellites

Systems and methods are disclosed herein for providing resistance to movement of a wearer. The system includes a plurality of wearable actuators, a plurality of wearable sensors, and a processor. Each of the wearable sensors measures an indication of an orientation of a corresponding one of the wearable actuators with respect to a vertical direction. Each of the sensors also measures an indication of a motion experienced by the corresponding one of the wearable actuators. The processor receives data from each sensor indicating the orientation and the motion of the sensor. The processor determines an amount of resistance to apply using each of the actuators based on the vertical direction and sends instructions to the actuators. The instructions cause the actuators to apply a resistance to the wearer.

Exoskeleton suit for adaptive resistance to movement

Growing community of inventors

Newton, MA, United States of America

Seamus Tuohy